I received some alprazolam tablets in the original foil sealed from manufacturer?

the pills are green and the foil says alprazolam and Almee-1 and also Jpee Drugs. It further gives a Mfg. Lic. No. 18/UA2007 with expiration date of 06/2011. Can anyone give me any information about the efficacy of this manufacturer. Thank you so much, the packing looks legimate as all safe guards seem to be in place. Oh,,by the way,,they are 1 milligram tablets.